A multicomponent density-functional theory is developed for the combined system of electrons and nuclei. We construct approximate functionals for the electron-nuclear correlation energy and illustrate the theory by explicit calculations for the H+2 molecular ion.

We develop a formalism of multicomponent BKP hierarchies using elementary geometry of spinors. The multicomponent KP and the modified KP hierarchy (hence all their reductions like KdV, NLS, AKNS or DS) are reductions of the multicomponent BKP.

Thermodynamic equilibrium in multicomponent solids subject to mechanical stresses is a complex nonlinear problem whose exact solution requires extensive computations. A few decades ago, Larché and Cahn proposed a linearized solution of the mechanochemical equilibrium problem by introducing the concept of open system elastic coefficients [Acta Metall. 21, 1051 (1973)]. Using the Ni-Al solid solu...

In this paper, we further develop multi-agent approach by creating new types of system models. The problem is that conventional models of multi-agent and multicomponent systems implicitly or explicitly assume existence of the absolute time or even do not include time in the set of defining parameters. However, it is rationalized theoretically and validated experimentally that there are differen...

We study the equilibrium sediment of a multicomponent system of charged colloids using primitive model Monte Carlo simulations, which include counterions explicitly. We find separation of the different colloidal components into almost pure layers, where colloids with large charge-to-mass ratio sediment higher in the sample. This effect appears due to a competition between ionic entropy, gravita...

Pseudomonas mendocina KR1 grows on toluene as a sole carbon and energy source. A multicomponent oxygenase was partially purified from toluene-grown cells and separated into three protein components. The reconstituted enzyme system, in the presence of NADH and Fe2+, oxidized toluene to p-cresol as the first detectable product. Experiments with p-deutero-toluene led to the isolation of p-cresol w...

The Community Preventive Services Task Force recently posted on its website new information regarding recommendations for multicomponent interventions for three different cancers: 1) “Increasing Cancer Screening: Multicomponent Interventions — Breast Cancer,” https://www.thecommunityguide.org/findings/cancer-screening-multicomponentinterventions-breast-cancer; 2) “Increasing Cancer Screening: M...

The synthesis of a multicomponent, mixed oligomer containing alpha-aminopyrrole is described; this system adopts a coiled structure in the solid state and serves as a prototype of a possible new class of hydrogen bond based helicates.

The approach to equilibrium in a buoyant-density gradient is a transport process in a centrifugal field and may be used to measure a sedimentation coefficient. This process is interesting for several reasons. Densitygradient sedimentation equilibrium can be used for the determination of the molecular weight of high-molecular weight DNA samples homogeneous in buoyant density. Furthermore, buoyan...